Fuel cell, electronic device, movable body, power generation...

Details Fuel cell, electronic device, movable body, power generation... Fuel cell, electronic device, movable body, power generation...

2011-06-07

2011-06-07

Ryan, Patrick (Department: 1726)

Chemistry: electrical current producing apparatus, product, and

Fuel cell, subcombination thereof, or method of making or...

Biochemical fuel cell

C429S002000

Reexamination Certificate

active

07955741

ABSTRACT:
A fuel cell which can directly extract electric power from a polysaccharide, such as starch, is provided. A fuel electrode is formed by immobilizing with an immobilizer, on an electrode comprised of, e.g., carbon, an enzyme responsible for decomposing a polysaccharide into monosaccharides, an enzyme responsible for decomposing the monosaccharide formed, a coenzyme (e.g., NAD+or NADP+) which forms a reductant due to the oxidation reaction in the monosaccharide decomposition process, a coenzyme oxidase (e.g., diaphorase) for oxidizing the reductant of the coenzyme (e.g., NADH or NADPH), and an electron mediator (e.g., ACNQ or vitamin K3) for receiving electrons generated due to the oxidation of the coenzyme from the coenzyme oxidase and delivering the electrons to the electrode. The fuel cell comprises the fuel electrode and the air electrode that sandwich an electrolyte layer.

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Wheals et al., “Fuel ethanol after 25 years”, TIBTECH Dec. 1999 (vol. 17), pp. 482-487.

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